Many people here have made the point that many hits don't mean fast kill. More power and larger calibers are only able to increase the chance that a hit will stop the threat.

The main thing we all need to take away from this is that Many hits or few hits, unless in the head (and that's still depending on the where) or Spinal cord (same thing as to where)will stop someone immediately.

In addition, even a shot to the heart doesn't mean immediate death.
An experienced hunter provide proof of that. Not to mention the many stories of people taking several rounds without going down or even dying.